Fix non-determinism in Reassociate caused by address coincidences
Summary:
Between building the pair map and querying it there are a few places that
erase and create Values. It's rare but the address of these newly created
Values is occasionally the same as a just-erased Value that we already
have in the pair map. These coincidences should be accounted for to avoid
non-determinism.
Thanks to Roman Tereshin for the test case.
Reviewers: rtereshin, bogner
Reviewed By: rtereshin
Subscribers: mgrang, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D59401
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356803 91177308-0d34-0410-b5e6-96231b3b80d8
Daniel Sanders5 months ago